🔧 力矩（扭矩）单位换算Moment of Force (Torque) Converter

使用说明与常见问题How-to & FAQ

「力矩（扭矩）单位换算」是什么？What is the Moment of Force (Torque) Converter tool?

在 N·m、kN·m、N·cm、N·mm、kgf·m、kgf·cm、gf·cm、lbf·ft（ft·lb）、lbf·in（in·lb）、ozf·in 和 dyn·cm 之间换算力矩/扭矩，一次列出全部结果。本地处理。Convert moment of force (torque) between N·m, kN·m, N·cm, N·mm, kgf·m, kgf·cm, gf·cm, lbf·ft (ft·lb), lbf·in (in·lb), ozf·in and dyn·cm, with every result listed at once. Processed locally.

如何使用「力矩（扭矩）单位换算」？How do I use the Moment of Force (Torque) Converter tool?

在「力矩（扭矩）单位换算」中，填写「数值」、「单位」等参数，结果会随输入实时计算并显示在下方。In the Moment of Force (Torque) Converter: Fill in "Value", "From unit"; results are recalculated instantly as you type.

ft·lb 和 lbf·ft 一样吗？Are ft·lb and lbf·ft the same?

作为扭矩单位是一样的，都表示 1 磅力作用在 1 英尺力臂上，等于约 1.3558 N·m。扳手和汽车说明书常写 ft·lb 或 lb·ft。As torque units, yes: both mean one pound-force on a one-foot lever arm, about 1.3558 N·m. Torque wrenches and car manuals often write ft·lb or lb·ft.

kgf·m 是什么？What is kgf·m?

kgf（千克力）是 1 kg 质量在标准重力下受到的力，1 kgf = 9.80665 N，所以 1 kgf·m = 9.80665 N·m。老式扭力扳手和一些亚洲车辆手册还在使用。A kilogram-force is the weight of 1 kg under standard gravity, 1 kgf = 9.80665 N, so 1 kgf·m = 9.80665 N·m. Older torque wrenches and some Asian vehicle manuals still use it.

怎么估扳手需要用多大力？How do I estimate the force on a wrench?

扭矩 = 力 × 力臂长度。例如 100 N·m 的螺栓，用 0.5 m 长的扳手需要约 200 N（约 20 kgf）的力。Torque = force × lever length. A 100 N·m bolt with a 0.5 m wrench needs about 200 N (about 20 kgf) of force.

能举个计算实例吗？Can you show a worked example?

例如在「力矩（扭矩）单位换算」中填 数值 = 9.80665，单位 = N·m，结果区显示：N·m：9.80665；ℹ 1 kgf = 9.80665 N；1 lbf·ft = 1.355818 N·m；力矩和能量单位（焦耳）量纲相同，但力矩习惯写 N·mFor example, entering Value = 9.80665, From unit = N·m in the Moment of Force (Torque) Converter gives: N·m: 9.80665; ℹ 1 kgf = 9.80665 N; 1 lbf·ft = 1.355818 N·m; torque has the same dimensions as energy, but is written N·m rather than joules

哪些输入会被检查？Which inputs are validated?

「力矩（扭矩）单位换算」会检查这些输入——「数值」：所选方式用到时必须填写，不能为负数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Moment of Force (Torque) Converter checks its inputs — "Value": required when the chosen option uses it, cannot be negative; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.

有哪些选项可以调整？What options can I adjust?

「力矩（扭矩）单位换算」的设置：「数值」默认 10；「单位」可选 N·m、kN·m、N·cm、N·mm、kgf·m、kgf·cm等（默认 N·m）。每次生成结果都按当前设置处理。Settings in the Moment of Force (Torque) Converter — "Value" default 10; "From unit": N·m, kN·m, N·cm, N·mm, kgf·m, kgf·cm, etc. (default N·m). The result always uses the current settings.

换算系数准确吗？Are the conversion factors exact?

「力矩（扭矩）单位换算」采用国际单位制（SI）或公认标准中的定义值作为换算系数，结果保留约 10 位有效数字。The Moment of Force (Torque) Converter uses factors defined by the SI or other recognised standards and shows about 10 significant digits.

「力矩（扭矩）单位换算」免费吗？需要注册吗？Is the Moment of Force (Torque) Converter free? Do I need an account?

「力矩（扭矩）单位换算」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Moment of Force (Torque) Converter is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.